42889161907 has 4 divisors (see below), whose sum is σ = 42893594536. Its totient is φ = 42884729280.

The previous prime is 42889161901. The next prime is 42889161911. The reversal of 42889161907 is 70916198824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42889161907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42889161901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2201769 + ... + 2221162.

It is an arithmetic number, because the mean of its divisors is an integer number (10723398634).

Almost surely, 2^42889161907 is an apocalyptic number.

42889161907 is a deficient number, since it is larger than the sum of its proper divisors (4432629).

42889161907 is an equidigital number, since it uses as much as digits as its factorization.

42889161907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432628.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 42889161907 in words is "forty-two billion, eight hundred eighty-nine million, one hundred sixty-one thousand, nine hundred seven".